Wrapping paper cutting mechanism



8169 I I a4,

March 20, 1945. I o. SANDBERG 2,372,020

WRAPPING PAPER CUTTING MECHANISM 1 Original Filed Feb. 17, 1942 a u: I

Patented Mar. 20, 1945 UNITED STATES PATENT WRAPPING PAPER oU'rEiiNq MECHANISM' i Oscar Sandberg', Defiance, Ohio, assiznor Manufacturing- Corporation, Defiance, Ohio, at

corporatlon ot Ohio eemeppueamremia -17, 1942, serie1 Nd Y I 431,209,111 Patent No. 2,338,132, datedJauu- L1; r se t invention h je f r fl t wr e a r P ma-i chine such as shown in my Patents Nos. 2,208,:

776e nd 2. 3, .97,-,.an nmr p dins ,app

cation-Serial Not-431,209 filed February 17,1942,- thepresent application being a division. of said application, now Patent No. 2,338,132 issued Jan. 4, 1944...v g .oOneobject of the invention is to .providemeans form-cutting wrappersfroma web oi wrapping material so that .the wrappers thus. out mayhbe fed onto supportingv barswhiehdirectthem to a position where the wrappersrare wrapped around articlessuch as candy bars and the like.

' Another object is to provide means --for cutting the web or wrapping material into sheets or wrappers somewhat longer than-the candy bars, one form of cutting mechanismbeing shown inmy Patent No. 2,2saoe7, my parent appliea'a tion, as well asthe present one disclosing a modificationthereof wherein "the wrappers' are sheared from-theweb oi material by arotary shearing blade coacting witha stationary blade,

means" being provided to assure properffeed of the web to the cutting means for cuttingof-an other. wrapper therefrom after the firstwrapper hasbeen-cnt.

"*Still" another object'is to provide a floating piate associated with the stati'oharycutterfblade for the purpose of lifting the out endof mewep oi wrapping material to a positionfor clearing the stationary cutting "blade so jt'ha'fith wee'or.

feeding Ymeans thereof as well as the".c1itting It m ans of the present application tion thereto;

-; Fi ures a 3 andrl een defieha iir' simil r to a portion of Figure 'L WmHhe cuttingmeans ind r nt imai pispqr: '3 cross rod "29 by cap screws: '30. floating feedplatei'l is carried by a pair ofarins 33 pivotedat tion; and

v ary 4,; 1-944e piviiied and-this npplioationocto ber l lgigiii, 505,713

' (or me -es) Figure v5 is areduced sectional -view on; the line 5+ G IQL Thew nmns:ma m s-of rbr p t rn are adapted for wrapping articles suchas candy barsandthe'likee Themechanism,of this ap-- plicationisadapted to out a-webv of wrapping material. into individualwrappers to-be fed to wrapping position the parts being synchronized in. operation :by' mechanical. interconnections.

.{The mechanism includes airame F support-' ingthe various shafts; rollers, etc.,- of my mechanisln.

Wrappers :for the articles: wrapped in the wrappingimach'ine are suppliedin the form of a'iweb W. or triepreper width and ontinuousrenew" The web w 'passes ovar an idler rollerv its and then-"around a reed roller-169. Above the i o'ller 169 a drive roller I10 is'provided, at

least tlie roller 116 being ofrubber or the like to providea'good-g'rip on the web Wand to pro-' pelit towardsupporting bars 1 6- when the roller "Wis rotated -counter-c1oekwise (in Figure 1). vTheroller I10 is mounted orra shaft "I which is suitably rotated, the "shaft H59, in turn,- being rotated bi 'speedcha'nging mechanism fully de scribed in my Patent no; 2,283,097,. Q

For; maintaining pro er ressure between the rollers lsaend llu the-shaft m or the roller I18 is'carried at itsends by'eccentric levers "6,

as shown in my Patent No. 2,283,097.; 'I'he' ecj centric levers ITG' are pivoted. at their centers and are urged in the proper direction for mova ingtheroller I10 toward thero'ller l68, 'as by springs. I82, such niov'e'ment'being' limited by a stationaryjlim'iting hook 183, The springs I82 attheir free ends arecconnected with stationary Journalled on the Trainer. is an arbor 2|. A movable cutter blade 22' is' carried by the arbor .ZLandis-adapted to shearingly coact with a stationary cutter blade 33' for severingthe web W into individual wrappers The. blade 22 isset I 1 59 in? 33 31 3 wnjn Figure :1, with set screws 25; to adjust i-tradially, Other set screws '26 are; provided to retain the adjustment.

.{Ilrailing the blade 2 2-is a strip 21 of resilient. material such as rubberor the like, which serves animportantfunction in the web feeding operation-, asgwill hereinafter appear. The strip 21 is held in position by: a strap 28. andnormally assumes the dottedposition shown in Figure 2. The stationary blade g23-is=secured to. a rigid 32 and normally raised to a position with the arms 33 engaging the arbor 2|. The means for biasing the feed plate 3| to raised position consists of a spring 34 for each arm 33. The arbor 2| carries cams 35 tocoact with the arms 33 to lower the floating plate3l just before a wrapper is cut from the web of wrapping material, as will hereinafter be described.

For propelling the wrappers, indicated at W in Figures 3 and 4 after they have been severed from the web W, I provide supporting rollers 38, 39 and 49. The roller is mounted on a shaft 54 rotatable in a bearing 54. The roller 38 is supported on a drive shaft 42.

The supporting roller 49 is mounted on a shaft 56. The shaft 50 is drivenby sprockets and 52 and a chain 53 from the drive-shaft 42. The

sprockets 55 and 56 and a chain 51. The chain 57 also extends around an idler sprocket 58 supported on'an arm 59, the arm being secured to a boss 59 by a cap screw-59 Companion rollers 62, 63, and- 65 are provided for the supporting rollers 38, 39 and 9 respectively. The companion rollers are mounted directly above-their respective supporting rollers and are arranged to engage the top of the wrapper W by gravity. For this purpose the roller 65 is mounted on a shaft 64 journalled in bear ings which float in vertical slots of bearing brackets as shown in my parent application wherein additional supporting rollers and other parts are shown. The roller 65 is'free to be rotated by the wrapper W as it passes under the roller.

A shaft 1 I carries the roller 62 and rotates in bearings 72 which are formed. on a bifurcated arm 13 oscillatable on a stub shaft 14. The stub shaft 14 is fixed in an arm 15 which, in turn, is fixed to a shaft 14 whereby the companion roller 62 may be swung upwardly, as shown bydotted The floating feed plate 3| will thereupon lift the on-coming web W, as in Figure 4, to clear the forward edge of the cut web with respect to the stationary blade 23 and permit the web to be fed to position for cutting another wrapper therefrom. The flexible strip 2'! closely following the moving blade 22, will keep the cut edge of the web from curling up, and, instead, it will press it toward the feed plate 3| and the stationblade 23, as shown in this figure.

Any time that the wrapper gets wrinkled instead of feeding properly to wrapping position, the companion rollers will be lifted by the wrapper and indicate to the operator that the mechanism is functioning improperly. The operator may readily lift the companion rollers out of the way to removethe wrinkled portion of the wrapper, whereuponfthe machine may again be startedf'The mechanism is so designed as to minimize-necessary stoppage of the machine due to improper functioning. Any wrinkled wrappers, however, may be quickly removed, thus minimizing the time required to again place'the machine in operation. I 1

While I have shown a particular embodiment of my invention, it will be understood, of course, that I do not wish to be limited thereto since many modifications may be made, and I therefore contemplate by the claims appended hereto to cover any'such modifications or substitutions of mechanical equivalents as fall within the true lines in Figure 1, either manually or by the wrinkling of a wrapper between the supporting rollers and the companionrollers. The shaft 14 is fixed in a bracket.

Like the companion roller 32, the companion roller 63 is carried by a bifurcated arm 13" pivoted on a shaft 14. The arm 13 carries a shaft 66* for the roller 63. The shaft 14* is supported by a bracket 15. The bracket 15 is carried by v the bearing 54 whichi's adjustable in a slot 54 Practical operation In the operation of my wrapper cutting meanism the web W is fed to cutting position between the rotating rollers I69 and H0. As the arbor 2| rotates, the cams 35 will first engage the arms 33 to depress the feed plate 3| and then the blade 22 will-engage the web, as shown in Figure 2, as the rotating'cutter blade 22 approaches the stationary cutter blade 23, bending the web between the cutting edges of the blades. When the blade 22 reaches the blade 23 it will shear the web in two, as illustrated in Figure 3 so cutting the wrapper W as to pull it on into the machine, sliding'it alongthe tops of the bars ID to wrappingpositiom spirit and scope of my invention without sacrificing any of its advantages.

I claim as my invention:

1. Wrapping paper cutting mechanism including .an arbor, a movable cutting blade carried thereby, a stationary cuttingblade, said movable cutting blade shearingly coacting with said sta tionary cutting blade during the rotation of said arbor, means for rotating said arbor in a direction for moving said movable cutting blade in the direction of travel of a web of wrapping paper. a floating spring biased feed plate under the web immediately behind said stationary cutting blade and normally assuming a position for lifting the advance edge of the cut web above said stationary cutting blade, and a flexible strip mounted on said arbor, following said movable blade, and bending backwards to engage the top of the web adjacent the cut portion thereof with said feed plate to prevent the cut edge from curlin'g'up before, dur ng and after the cut. j

2.'Wrapper cutting mechanism including an arbor, a movable cutting blade carried thereby, a stationary cutting blade, said movable cutting blade sheaiingly co-acting with said stationary cutting blade during the rotation of said'arbor, means forrotatlng' said arbor in a direction for moving'said movable cutting blade in the direction of travel of a web of wrapping paper, a floating feed plate under the web immediately behind said stationary cutting blade and normally assuming a position for lifting the advance edge of the cut web above said stationary cutting blade, said arbor having cam means coacting with said feed plate'to depress it each time the arbor'rotates, and to release it for pressing the web against the movable cutting blade just prior to the movable cutting blade ccacting with the stationary cutting blade to cut a piece from said web, said cam means coacting with said feed plate at a position laterally beyond the edge of the web thereon, and aflexible strip mounted on said arbor. following said movable blade, and bent backwards by said feed plate to engage the top oithe web adjacent the out portion thereof to prevent the cut edge from curling up.

3. Wrapper cutting and feeding mechanism comprising cutting means for cutting a web into individual wrappers, said cutting means including a rotatable arbor, a cutting blade carried thereby, a companion stationary cutting blade mounted on the frame of the mechanism, means for rotating said arbor to cause the .blade carried thereby to shearingly coact with the stationary blade, a floating resiliently mounted feed plate behind said stationary-blade for supporting the web of material adjacent the point of shearing thereof into individual wrappers, said movable blade eflecting depression or said feed plate as the movable blade approaches the stationary blade in shearing coaction therewith, said floating plate lifting the web from which the wrapper has been out after passage of the movable blade with respect to the stationary blade, and a resilient strip immediately behind said movable blade andof suflicient width to retain the out edge of the web against said .feed plate and prevent it from curling away therefrom before, during and after the cutting operation' 1 OSCAR SANDBERG. 

